implement arena allocators

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/alloc/arena_free.c b/lib/alloc/arena_free.c
new file mode 100644
index 0000000..dc2b45e
--- /dev/null
+++ b/lib/alloc/arena_free.c
@@ -0,0 +1,20 @@
+#include <sys/mman.h>
+
+#include <stdlib.h>
+
+#include "alloc.h"
+#include "macros.h"
+
+void
+arena_free(arena *a)
+{
+	ASSUME(a != nullptr);
+
+	struct _region *cur, *next;
+	for (cur = a->_head; cur != nullptr; cur = next) {
+		next = cur->next;
+		munmap(cur->data, cur->cap);
+		free(cur);
+	}
+	a->_head = nullptr;
+}